1, a sudden drop in pressure of street sweeper oil causes Sometimes a sudden drop in pressure of road Sweeper oil, this demand from the situation at that time to analyze. If the engine in normal operation. A sudden drop in pressure of street sweeper oil, most pressure limiting valve is pressure of road Sweeper oil filth chock ; if after the high-speed rotation of the engine, a sudden drop in pressure of road Sweeper oil, mostly because a machine tubing road is washed, or pressure of road Sweeper oil pressure limiting valve spring broken. 2, how to judge the road Sweeper oil pressure too high Road Sweeper engine oil pressure is too high can cause the oil pressure sensor or oil filter shell is destroyed. Road Sweeper engine oil pressure is too high, repair of road Sweeper to distinguish between new engine is the engine used in normal operation, required separate treatment. 1 new repair engine, Road sweeping vehicle oil pressure too high should be judged by the following : engine oil grades, and high viscosity ; road Sweeper oil pressure regulating valve adjustment excessive or improper oil pump pressure limiting valve adjustment and elastic pressure limiting valve spring too strong ; spindle Assembly clearance is too small ; oil or sensor is faulty. 2 engines being run. Road Sweeper oil main office blocked ; oil or sensor failure.
